CataleoSoftware
For Vendors

E-commerce Seller Tools Comparison

eRank vs. What Sells Next

At a glance

At a glance

eRank

Best for

Best for Etsy sellers who want keyword data and listing audits for one or more shops at a low monthly price.

What Sells Next

Best for

Best for Etsy sellers who make their own products and want to test an idea against the market before making it.

  • Freelancers

Cataleo does not name a winner. Both statements come from the vendors themselves.

Full Comparison

Criterion eRank What Sells Next
Starting price Free Paid plans from $5.99 per month, or $65.99 billed annually. Free Premium is £12 per month, tax included, cancel anytime.
Free trial No trial; an ongoing free plan instead No trial; an ongoing free plan instead
Hosting Cloud: a web app and a Chrome extension Cloud: a web app and a Chrome extension
Made in Not stated United Kingdom
Product research Trend Buzz on what shoppers search for on Etsy, Amazon, eBay and other marketplaces, monthly Etsy trend reports by category, and the Top 100 listings for any keyword with estimated sales and average price Product discovery, Opportunity Radar and the Crossover Lab, which combines a product with a theme. Idea checks show comparable Etsy listings, asking prices and buyer signals, with an idea board and build guides for planning the make.
Marketplace keyword research Keyword tool with search volume, clicks, click-through rate, competition and 15 months of search history, keyword ideas, keyword lists and side-by-side comparison of up to four keywords Keyword research and Keyword Smash
Listing optimisation Listing audits against Etsy's guidelines, the AI Listing Helper for titles, tags and descriptions, tag reports, a rank checker and daily snapshots of listing changes Listing audit, AI listing drafts with editable titles, descriptions and 13 tags, AI copy reviews of connected listings, saved listing drafts, concept visuals and listing videos from product photos
Competitor tracking Estimated daily sales for tracked Etsy shops, shop reports, competitor listings and tags, and a ranking of Etsy's top sellers by sales Competition watch with estimated sales and revenue, search visibility for connected shops, and a weekly market briefing
Fee and profit calculation A Profit Calculator for all members: from the shop's country, price, shipping, tax, discount and the seller's labour, material, shipping, renewal and Etsy Ads and Offsite Ads costs, it estimates Etsy's listing, transaction, payment processing and regulatory fees, total cost, profit and margin; an Ad Performance Calculator sits beside it Fee and profit calculator
Marketplaces covered Etsy for shop connections and competitor tracking; the Chrome extension adds keyword and competitor research on Amazon and keyword trend data on Printify, Shopify, eBay and Teachers Pay Teachers Etsy
Integrations and API Etsy shop connection through the Etsy API, up to 100 shops on Expert, and a Chrome extension An optional read-only Etsy shop connection, with changes copied into Etsy by hand, and a Chrome extension
AI features Yes Yes
Deployment Cloud (SaaS), Browser-based Cloud (SaaS), Browser-based
Support Email helpdesk, Community forum Not stated
Onboarding Documentation and knowledge base, Video tutorials Not stated
Company size Not stated Freelancers
Integrations Etsy, Chrome extension Etsy, Chrome extension

Compare more tools

Row where the values differ The small markers point at the lower number, the longer list or the stated feature. They describe the data, they are not a verdict.

The short version

Key Differences

  • Product research eRank Trend Buzz on what shoppers search for on Etsy, Amazon, eBay and other marketplaces, monthly Etsy trend reports by category, and the Top 100 listings for any keyword with estimated sales and average price What Sells Next Product discovery, Opportunity Radar and the Crossover Lab, which combines a product with a theme. Idea checks show comparable Etsy listings, asking prices and buyer signals, with an idea board and build guides for planning the make.
  • Marketplace keyword research eRank Keyword tool with search volume, clicks, click-through rate, competition and 15 months of search history, keyword ideas, keyword lists and side-by-side comparison of up to four keywords What Sells Next Keyword research and Keyword Smash
  • Listing optimisation eRank Listing audits against Etsy's guidelines, the AI Listing Helper for titles, tags and descriptions, tag reports, a rank checker and daily snapshots of listing changes What Sells Next Listing audit, AI listing drafts with editable titles, descriptions and 13 tags, AI copy reviews of connected listings, saved listing drafts, concept visuals and listing videos from product photos
  • Competitor tracking eRank Estimated daily sales for tracked Etsy shops, shop reports, competitor listings and tags, and a ranking of Etsy's top sellers by sales What Sells Next Competition watch with estimated sales and revenue, search visibility for connected shops, and a weekly market briefing
  • Fee and profit calculation eRank A Profit Calculator for all members: from the shop's country, price, shipping, tax, discount and the seller's labour, material, shipping, renewal and Etsy Ads and Offsite Ads costs, it estimates Etsy's listing, transaction, payment processing and regulatory fees, total cost, profit and margin; an Ad Performance Calculator sits beside it What Sells Next Fee and profit calculator

Every line is one datapoint from the table above, picked automatically. Nothing here is written text.

The trade-offs

Strengths and Limitations

eRank

Strengths

  • Free plan with no time limit and no card needed
  • Paid plans start at $5.99 a month, or $65.99 billed annually
  • Keyword data comes with 15 months of search history
  • Expert connects up to 100 Etsy shops in one account

Limitations

  • Free plan is limited to 5 keyword lookups and 5 listing audits a day
  • Competitor sales are estimates
  • Shop connections and competitor tracking cover Etsy only
  • The site names no public API

What Sells Next

Strengths

  • Free plan with daily keyword lookups and idea checks, no card needed
  • Idea checks show comparable Etsy listings, asking prices and buyer signals
  • Fee and profit calculator and build guides sit next to the research
  • The Etsy shop connection is optional and read-only

Limitations

  • The site names Etsy as the only marketplace
  • Listing changes have to be copied into Etsy by hand
  • Competitor sales and revenue are estimates
  • The site does not state the company or country behind the tool

Plans

Pricing

eRank

  • Free $0 No time limit. 5 keyword lookups and 5 listing audits per day, 1 shop with 50 listings.
  • Basic $5.99 / month Or $65.99 billed annually. 100 keyword lookups per day, up to 5 shops.
  • Pro $9.99 / month Or $94.99 billed annually. 200 keyword lookups per day, up to 10 shops.
  • Expert $29.99 / month Or $269.99 billed annually. 500 keyword lookups per day, up to 100 shops.
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What Sells Next

  • Free £0 5 keyword lookups per day, 3 starter crossovers and 5 idea checks per rolling 24 hours. No card needed.
  • Premium £12 Per month, tax included, cancel anytime. Introductory offer: the first month is £5.
Visit site

What users say

Review Scores · opens after launch

eRank

Ease of use
Not rated yet
User interface
Not rated yet
Onboarding
Not rated yet
Support and service
Not rated yet
Value for money
Not rated yet
Features
Not rated yet

No reviews yet. Nothing has been published here yet, and no score is shown. How a review is checked before it appears is described below.

What Sells Next

Ease of use
Not rated yet
User interface
Not rated yet
Onboarding
Not rated yet
Support and service
Not rated yet
Value for money
Not rated yet
Features
Not rated yet

No reviews yet. Nothing has been published here yet, and no score is shown. How a review is checked before it appears is described below.

How we check reviews

Before sending, the author has to confirm three things: that they have used the product themselves, that they work neither for the vendor nor for a competitor, and that nobody is paying them for the review. We also ask whether the vendor invited them to write it. That answer is required, either answer is accepted, and it stays with the review.

Every review is read by a person before it appears. An email address is required and is confirmed: we send a link to it, and a review does not reach us until the author opens that link, so a review has a sender who was reachable at least once rather than being anonymous. Where what somebody writes needs backing, we ask them for evidence that they used the product, and a review that does not get it is not published. We publish positive and negative reviews alike, we pay nothing and offer nothing for a review, and we accept none that was bought or incentivised.

What we cannot do is verify a purchase. There is no shop here and no account, so whether the author really used the tool rests on their own declaration, on whatever we ask them for, and on the plausibility of what they write. We say so rather than implying a check that does not exist.

A vendor cannot buy a review, and cannot have one removed or changed because they dislike it. We remove or edit a review only if it breaks our rules or the law, for example a false statement of fact. Paid placement has no effect on which reviews appear or on any score.

Read the full version on our methodology page

Where this comes from

Where this comes from

eRank https://erank.com/ · checked against the official source on 2026-11-10

What Sells Next https://whatsellsnext.com/ · checked against the official source on 2026-11-10

This table lists factual criteria taken from information the vendors publish themselves. For how we put it together, see the methodology.